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<br />I, Quantitative Impacu of Mining <br />drawdown are calculated based on revised vertical transmissivity values (Table 7). These <br />estimates suggested that one foot of drawdown would be evident from 1.7 to 2.1 miles from the <br />perimeter of the mine. <br />Concerns about drawdown in the immediate adjacent areas was quantified through the <br />observation of depths to water in some holes immediately adjacent to the Golden Eagle Mine <br />(FYgure 6). Actual drawdown in several wells located within 900 feet of the perimeter of the <br />mine have shown drawdowns as much as 175' at a distance of 125' from the perimeter of the <br />mine and 13.6' at a distance of 500' from the perimeter of the mine. <br />Fable 7. Extent of Drawdown of Piezometric Surface during <br />Mining of the Golden Eagle Mine <br /> Transmissivity Extent of Drawdown from <br /> (B) Perimeter <br />CASE (ft) (ft) <br />IIB 2098 11,115 <br />IIIB 1711 9,051 <br />n <br />~~ <br /> <br />• <br />22 <br />